RE: A new proto-sensei to get a better grip on dark matter
not very present on steemit atm myself so im running behind on physics lessons but as i am a force of chaos and a cat of shadows myself not seeing me doesnt mean im dead - especially since my state is always uncertain as i am a schroedingers cat nest and definitely don't behave when observed.
Which by all but human paper law makes me very normal from the quantum level up, but try explaining that to normal people ...
So i just read the mayans were a few years of an a dark matter hurricane will destroy the world however if it takes a lightyear of lead to halt neutrinos : And you need about a light year of lead to stop your typical neutrino. As a result of this, dark matter is incredibly fluffy and diffuse, which means even in our Solar System, by the heart of our galaxy, dark matter's effects are negligibly unobservable - i never considered particles to be fluffy ... - then i guess we should be safe for now as that would bring the chance of dark matter interacting with a planet this size pretty much down to the lifetime of a solar system of more ? probability-wise (? im not the numbers guy).
However as i am, despite my total lack of degrees in the formal sense of the word, not a complete idiot, i DO know that in essence almost all probability can be reduced to 50/50 since it's either yes or no
Which, in turn makes it a cosmic lottery and people DO win ...
I have to cut it short as i'm not feeling too well and i'll probably miss the replies as i have done for a few months now (this thing called life getting in my head && the way) but this should without doubt prove
that i'm still here :)
always a pleasure, glad i could find the focus to read something
As my presence is very low too, you will not have much to catch up. This is somehow a good news for you :D
This being said, I am glad to see you are still around.
To come back to the question: we don't need to stop dark matter, we only need to see traces from its passage through the detector. And those traces are exactly tiny nuclear or electornic recoils that can be meaured. We therefore need large, but not too large, apparatuses.
In the most optoimistic cases, we are expecting a few dark matter events. In the least optimistic ones, dark matter interactions are weaker and nothing should be seen. The problem of the word weak is that we are not sure how weak it should be. Very weak interactions are acceptable theoretically but do not give us many chances experimentally, for instance.
I hope this answer helps :)